AD9901 Datasheet PDF - Analog Devices
| Part Number | AD9901 | |
| Description | Ultrahigh Speed Phase/Frequency Discriminator | |
| Manufacturers | Analog Devices | |
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FEATURES
Phase and Frequency Detection
ECL/TTL/CMOS Compatible
Linear Transfer Function
No “Dead Zone”
MIL-STD-883 Compliant Versions Available
APPLICATIONS
Low Phase Noise Reference Loops
Fast-Tuning “Agile” IF Loops
Secure “Hopping” Communications
Coherent Radar Transmitter/Receiver Chains
Ultrahigh Speed
Phase/Frequency Discriminator
AD9901
PHASE-LOCKED LOOP
REFERENCE
INPUT
AD9901
LOW-
PASS
FILTER
VCO
OSCILLATOR
OUTPUT
1/N
OPTIONAL 1/N PRESCALER
TYPICAL OF DIGITAL PLLs
GENERAL DESCRIPTION
The AD9901 is a digital phase/frequency discriminator capable
of directly comparing phase/frequency inputs up to 200 MHz.
Processing in a high speed trench-oxide isolated process, com-
bined with an innovative design, gives the AD9901 a linear
detection range, free of indeterminate phase detection zones
common to other digital designs.
With a single +5 V supply, the AD9901 can be configured to
operate with TTL or CMOS logic levels; it can also operate
with ECL inputs when operated with a –5.2 V supply. The
open-collector outputs allow the output swing to be matched to
post-filtering input requirements. A simple current setting resis-
tor controls the output stage current range, permitting a reduc-
tion in power when operated at lower frequencies.
A major feature of the AD9901 is its ability to compare
phase/frequency inputs at standard IF frequencies without
prescalers. Excessive phase uncertainty which is common with
standard PLL configurations is also eliminated. The AD9901
provides the locking speed of traditional phase/frequency dis-
criminators, with the phase stability of analog mixers.
The AD9901 is available as a commercial temperature range
device, 0°C to +70°C, and as a military temperature device,
–55°C to +125°C. The commercial versions are packaged in a
14-lead ceramic DIP and a 20-lead PLCC.
The AD9901 Phase/Frequency Discriminator is available in
versions compliant with MIL-STD-883. Refer to the Analog
Devices Military Products Databook or current AD9901/883B
data sheet for specifications.
FUNCTIONAL BLOCK DIAGRAM
REFERENCE
INPUT
OSCILLATOR
INPUT
DQ
REFERENCE
INPUT
FLIP-FLOP
Q
DQ
OSCILLATOR
INPUT
FLIP-FLOP
Q
XOR
DQ
REFERENCE
FREQUENCY
DISCRIMINATOR
FLIP-FLOP
RQ
DS
Q
OSCILLATOR
FREQUENCY
DISCRIMINATOR
FLIP-FLOP
Q
OUTPUT
OUTPUT
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999
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AD9901
EXPLANATION OF TEST LEVELS
Test Level
I – 100% production tested.
II – 100% production tested at +25°C, and sample tested
at specified temperatures.
V – Parameter is a typical value only.
VI – All devices are 100% production tested at +25°C. 100%
production tested at temperature extremes for extended
III – Sample tested only.
temperature devices; sample tested at temperature ex-
IV – Parameter is guaranteed by design and characteriza-
tremes for commercial/industrial devices.
tion testing.
TTL DIP Pinouts
PIN CONFIGURATIONS
ECL DIP Pinouts
GROUND 1
14 GROUND
BIAS 2
13 GROUND
GROUND
GROUND
VCO INPUT
3 12 REFERENCE INPUT
AD9901
4 TOP VIEW 11 +VS
5 (Not to Scale) 10 OUTPUT
OUTPUT 6
+VS 7
9 RSET
8 GROUND
TTL LCC Pinouts
–VS 1
BIAS 2
14 REFERENCE INPUT
13 REFERENCE INPUT
VCO INPUT
VCO INPUT
–VS
3 AD9901 12 –VS
4 TOP VIEW 11 GROUND
5 (Not to Scale) 10 OUTPUT
OUTPUT 6
9 RSET
GROUND 7
8 –VS
ECL LCC Pinouts
3 2 1 20 19
GROUND 4
NC 5
GROUND 6
NC 7
VCO INPUT 8
AD9901
TOP VIEW
(Not to Scale)
18 REFERENCE INPUT
17 NC
16 +VS
15 NC
14 OUTPUT
NC = NO CONNECT 9 10 11 12 13
TTL PLCC Pinouts
3 2 1 20 19
VCO INPUT 4
NC 5
VCO INPUT 6
NC 7
–VS 8
AD9901
TOP VIEW
(Not to Scale)
NC = NO CONNECT 9 10 11 12 13
18 –VS
17 NC
16 GROUND
15 NC
14 OUTPUT
ECL PLCC Pinouts
3 2 1 20 19
GROUND 4
GROUND 5
VCO INPUT 6
OUTPUT 7
NC 8
PIN 1
IDENTIFIER
AD9901
TOP VIEW
(Not to Scale)
18 REFERENCE INPUT
17 NC
16 +VS
15 NC
14 OUTPUT
NC = NO CONNECT 9 10 11 12 13
3 2 1 20 19
VCO INPUT 4
VCO INPUT 5
–VS 6
OUTPUT 7
NC 8
PIN 1
IDENTIFIER
18
–VS
17 NC
AD9901
TOP VIEW
16 GROUND
(Not to Scale)
15 NC
14 OUTPUT
NC = NO CONNECT 9 10 11 12 13
REV. B
–5–
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for AD9901 electronic component. |
| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ AD9901.PDF Datasheet ] | |
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